Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17716903baa7c31f1036efa98dc8951eb155937631e0403cdf88ef8004241614' 
  AND token = 'tNKscJ/7VgCf6v7jwPasNDvvsBfaatQvXEKuEJXIMX4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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