Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c342d070014a7e8fdfb72c74f6c409f414fa4c1daf24604c72dfbbf32762ad9d' 
  AND token = 'op5h407OKVb9eTQFNWCkFK3ZPUvzagCAqPK6P2eamZo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00063

JSON explain

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