Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6923674c42f4e4328b9869ab238ff659a73c69782d6f7ae894545e4d35b11746' 
  AND token = 'Or7Hof3lxIzuKy4aJMw0sZ67T9SRQnwqnuCUGn35uIY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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