Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7116f49f07b270836c070da74775820eb2c135cd7d3c4f49f42eecf891ce99c' 
  AND token = 'HaV2MMh0U41aIEwkWZ/95BYEYu1mt+E2PwB6Nbx/heg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}