Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd513babd1a140e919b5a3d8690f8959aab87d98666ea4e34d3e993812833c1cf' 
  AND token = 'oA7UpEezH5tCVLgdzeNQYcHbIHqVlYXr7Y6cKz8OLhU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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