Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b704409588eface922c09117c8df628ca10cce5647d155a7f4e1278ec15fb1f0' 
  AND token = 'X/ufsgeTdWZIMkiK/X/Zgy4n8S0TCY8gIJONBn6LGvg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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