SELECT 
  cscart_bm_snapping.grid_id as grid_id, 
  cscart_bm_snapping.block_id as block_id, 
  IFNULL(
    dynamic_object_content.content, 
    default_content.content
  ) as content, 
  IFNULL(
    dynamic_object_content.object_id, 
    default_content.object_id
  ) AS object_id, 
  IFNULL(
    dynamic_object_content.object_type, 
    default_content.object_type
  ) AS object_type, 
  cscart_bm_block_statuses.object_ids as object_ids, 
  cscart_bm_snapping.*, 
  cscart_bm_blocks.*, 
  cscart_bm_blocks_descriptions.* 
FROM 
  cscart_bm_snapping 
  LEFT JOIN cscart_bm_blocks ON cscart_bm_blocks.block_id = cscart_bm_snapping.block_id 
  LEFT JOIN cscart_bm_block_statuses ON cscart_bm_snapping.snapping_id = cscart_bm_block_statuses.snapping_id 
  AND cscart_bm_block_statuses.object_type LIKE '' 
  LEFT JOIN cscart_bm_blocks_descriptions ON cscart_bm_blocks.block_id = cscart_bm_blocks_descriptions.block_id 
  LEFT JOIN cscart_bm_blocks_content AS default_content ON cscart_bm_blocks.block_id = default_content.block_id 
  AND cscart_bm_blocks_descriptions.lang_code = default_content.lang_code 
  AND default_content.snapping_id = 0 
  AND default_content.object_id = 0 
  AND default_content.object_type like '' 
  LEFT JOIN cscart_bm_blocks_content AS dynamic_object_content ON cscart_bm_blocks.block_id = dynamic_object_content.block_id 
  AND cscart_bm_blocks_descriptions.lang_code = dynamic_object_content.lang_code 
  AND dynamic_object_content.object_id = 0 
  AND dynamic_object_content.object_type like '' 
WHERE 
  cscart_bm_snapping.grid_id IN (
    155, 156, 157, 158, 159, 160, 163, 161, 
    162, 164, 165, 166, 169, 174, 167, 168, 
    170, 171, 172, 173, 175, 176
  ) 
  AND cscart_bm_blocks_descriptions.lang_code = 'es' 
ORDER BY 
  cscart_bm_snapping.order, 
  cscart_bm_snapping.block_id

Query time 0.00602

JSON explain

{
  "query_block": {
    "select_id": 1,
    "cost_info": {
      "query_cost": "283.63"
    },
    "ordering_operation": {
      "using_temporary_table": true,
      "using_filesort": true,
      "cost_info": {
        "sort_cost": "66.00"
      },
      "nested_loop": [
        {
          "table": {
            "table_name": "cscart_bm_snapping",
            "access_type": "range",
            "possible_keys": [
              "grid_id"
            ],
            "key": "grid_id",
            "used_key_parts": [
              "grid_id"
            ],
            "key_length": "4",
            "rows_examined_per_scan": 22,
            "rows_produced_per_join": 22,
            "filtered": "100.00",
            "index_condition": "(`marketpl_db`.`cscart_bm_snapping`.`grid_id` in (155,156,157,158,159,160,163,161,162,164,165,166,169,174,167,168,170,171,172,173,175,176))",
            "cost_info": {
              "read_cost": "48.41",
              "eval_cost": "4.40",
              "prefix_cost": "52.81",
              "data_read_per_join": "17K"
            },
            "used_columns": [
              "snapping_id",
              "block_id",
              "grid_id",
              "wrapper",
              "user_class",
              "order",
              "status"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_bm_block_statuses",
            "access_type": "ALL",
            "possible_keys": [
              "snapping_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 22,
            "filtered": "100.00",
            "using_join_buffer": "Block Nested Loop",
            "cost_info": {
              "read_cost": "2.02",
              "eval_cost": "4.40",
              "prefix_cost": "59.23",
              "data_read_per_join": "2K"
            },
            "used_columns": [
              "snapping_id",
              "object_ids",
              "object_type"
            ],
            "attached_condition": "<if>(is_not_null_compl(cscart_bm_block_statuses), ((`marketpl_db`.`cscart_bm_snapping`.`snapping_id` = `marketpl_db`.`cscart_bm_block_statuses`.`snapping_id`) and (`marketpl_db`.`cscart_bm_block_statuses`.`object_type` like '')), true)"
          }
        },
        {
          "table": {
            "table_name": "cscart_bm_blocks",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id"
            ],
            "key_length": "4",
            "ref": [
              "marketpl_db.cscart_bm_snapping.block_id"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 22,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "22.00",
              "eval_cost": "4.40",
              "prefix_cost": "85.63",
              "data_read_per_join": "4K"
            },
            "used_columns": [
              "block_id",
              "type",
              "properties",
              "company_id",
              "storefront_id"
            ]
          }
        },
        {
          "table": {
            "table_name": "cscart_bm_blocks_descriptions",
            "access_type": "eq_ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id",
              "lang_code"
            ],
            "key_length": "10",
            "ref": [
              "marketpl_db.cscart_bm_snapping.block_id",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 22,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "22.00",
              "eval_cost": "4.40",
              "prefix_cost": "112.03",
              "data_read_per_join": "4K"
            },
            "used_columns": [
              "block_id",
              "lang_code",
              "name"
            ]
          }
        },
        {
          "table": {
            "table_name": "default_content",
            "access_type": "ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id",
              "snapping_id",
              "lang_code",
              "object_id"
            ],
            "key_length": "18",
            "ref": [
              "marketpl_db.cscart_bm_snapping.block_id",
              "const",
              "marketpl_db.cscart_bm_blocks_descriptions.lang_code",
              "const"
            ],
            "rows_examined_per_scan": 1,
            "rows_produced_per_join": 22,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "22.00",
              "eval_cost": "4.40",
              "prefix_cost": "138.43",
              "data_read_per_join": "4K"
            },
            "used_columns": [
              "snapping_id",
              "object_id",
              "object_type",
              "block_id",
              "lang_code",
              "content"
            ],
            "attached_condition": "<if>(is_not_null_compl(default_content), (`marketpl_db`.`default_content`.`object_type` like ''), true)"
          }
        },
        {
          "table": {
            "table_name": "dynamic_object_content",
            "access_type": "ref",
            "possible_keys": [
              "PRIMARY"
            ],
            "key": "PRIMARY",
            "used_key_parts": [
              "block_id"
            ],
            "key_length": "4",
            "ref": [
              "marketpl_db.cscart_bm_snapping.block_id"
            ],
            "rows_examined_per_scan": 3,
            "rows_produced_per_join": 66,
            "filtered": "100.00",
            "cost_info": {
              "read_cost": "66.00",
              "eval_cost": "13.20",
              "prefix_cost": "217.63",
              "data_read_per_join": "14K"
            },
            "used_columns": [
              "object_id",
              "object_type",
              "block_id",
              "lang_code",
              "content"
            ],
            "attached_condition": "<if>(is_not_null_compl(dynamic_object_content), ((`marketpl_db`.`dynamic_object_content`.`object_id` = 0) and (`marketpl_db`.`dynamic_object_content`.`lang_code` = `marketpl_db`.`cscart_bm_blocks_descriptions`.`lang_code`) and (`marketpl_db`.`dynamic_object_content`.`object_type` like '')), true)"
          }
        }
      ]
    }
  }
}

Result

grid_id block_id content object_id object_type object_ids snapping_id wrapper user_class order status type properties company_id storefront_id lang_code name
158 5 0 173 top-logo 0 A template a:2:{s:8:"template";s:32:"blocks/static_templates/logo.tpl";s:11:"enable_link";s:1:"Y";} 0 1 es Logo
159 6 0 174 0 A call_request a:1:{s:8:"template";s:44:"addons/call_requests/blocks/call_request.tpl";} 0 1 es Call Request
161 7 0 175 top-search 0 A template a:1:{s:8:"template";s:34:"blocks/static_templates/search.tpl";} 0 1 es Search
164 10 0 178 0 A breadcrumbs a:1:{s:8:"template";s:22:"common/breadcrumbs.tpl";} 0 1 es Breadcrumbs
165 11 0 179 blocks/wrappers/mainbox_general.tpl 0 A main 0 1 es Main Content
170 14 0 182 blocks/wrappers/footer_general.tpl 0 A template a:1:{s:8:"template";s:53:"blocks/static_templates/my_account_links_advanced.tpl";} 0 1 es Bottom my account
171 15 a:1:{s:4:"menu";s:1:"3";} 0 183 blocks/wrappers/footer_general.tpl footer-menu-shop 0 A menu a:2:{s:8:"template";s:26:"blocks/menu/text_links.tpl";s:18:"show_items_in_line";s:1:"N";} 0 1 es Shop
172 16 a:1:{s:4:"menu";s:1:"4";} 0 184 blocks/wrappers/footer_general.tpl footer-menu-create-orders 0 A menu a:2:{s:8:"template";s:26:"blocks/menu/text_links.tpl";s:18:"show_items_in_line";s:1:"N";} 0 1 es Create order
173 17 a:1:{s:7:"content";s:340:" <ul id="about_cs_cart_links"> <li class="ty-footer-menu__item"><a href="{"pages.view?page_id=1"|fn_url}">Our team</a></li> <li class="ty-footer-menu__item"><a href="{"pages.view?page_id=3"|fn_url}">Privacy policy</a></li> </ul>";} 0 185 blocks/wrappers/footer_general.tpl footer-no-wysiwyg footer-contacts 0 A smarty_block a:1:{s:8:"template";s:23:"blocks/smarty_block.tpl";} 0 1 es About us
155 1 0 169 top-languages 2 A languages a:4:{s:8:"template";s:20:"blocks/languages.tpl";s:4:"text";s:0:"";s:6:"format";s:4:"icon";s:14:"dropdown_limit";s:1:"0";} 0 1 es Languages
157 4 0 172 blocks/wrappers/onclick_dropdown.tpl top-my-account 2 A my_account a:1:{s:8:"template";s:21:"blocks/my_account.tpl";} 0 1 es My Account
162 8 0 176 top-cart-content 2 A cart_content a:5:{s:8:"template";s:23:"blocks/cart_content.tpl";s:22:"display_bottom_buttons";s:1:"Y";s:20:"display_delete_icons";s:1:"Y";s:19:"products_links_type";s:5:"thumb";s:20:"generate_block_title";s:1:"Y";} 0 1 es Cart content
163 9 a:1:{s:4:"menu";s:1:"2";} 0 177 top-menu 2 A menu a:3:{s:8:"template";s:35:"blocks/menu/dropdown_horizontal.tpl";s:30:"dropdown_second_level_elements";s:2:"12";s:29:"dropdown_third_level_elements";s:1:"6";} 0 1 es Main menu
167 12 0 180 2 A template a:1:{s:8:"template";s:65:"addons/newsletters/blocks/static_templates/subscribe_advanced.tpl";} 0 1 es Subscribe
168 13 a:1:{s:7:"content";s:627:"<div class="ty-social-link-block"><h3 class="ty-social-link__title">{__("get_social")}</h3> <div class="ty-social-link facebook"> <a href="http://www.facebook.com"><i class="ty-icon-facebook"></i>Facebook</a> </div> <div class="ty-social-link instagram"> <a href="https://www.instagram.com"><i class="ty-icon-instagram"></i>Instagram</a> </div> <div class="ty-social-link twitter"> <a href="https://twitter.com"><i class="ty-icon-twitter"></i>Twitter</a> </div> <div class="ty-social-link youtube"> <a href="https://www.youtube.com/user/cscartvideos"><i class="ty-icon-youtube"></i>Youtube</a> </div></div> ";} 0 181 2 A smarty_block a:1:{s:8:"template";s:23:"blocks/smarty_block.tpl";} 0 1 es Social links
175 18 0 186 2 A template a:1:{s:8:"template";s:37:"blocks/static_templates/copyright.tpl";} 0 1 es Copyright
176 19 0 187 2 A template a:1:{s:8:"template";s:40:"blocks/static_templates/profile_info.tpl";} 0 1 es Payment icons
155 2 0 170 top-currencies 3 A currencies a:4:{s:8:"template";s:21:"blocks/currencies.tpl";s:4:"text";s:0:"";s:6:"format";s:6:"symbol";s:14:"dropdown_limit";s:1:"3";} 0 1 es Currencies
156 3 a:1:{s:4:"menu";s:1:"1";} 0 171 top-quick-links 3 A menu a:2:{s:8:"template";s:26:"blocks/menu/text_links.tpl";s:18:"show_items_in_line";s:1:"Y";} 0 1 es Quick links