Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '309520ffa148857c68db1e6040ddd9c9d7b5d727be0c3cbf04a10fe6d198521b' 
  AND token = '6UxZRJmjHnjWEbQVRoIW61yhUSpNp/I9+ltod0sBJ7s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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