Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0e96d6d908d8d6e76b6a9db9f0fc19bba8eaa70ba1cfb1f6ea28c958d34d34a7' 
  AND token = '0q0icOawRge6VUOyzogTRBcLHnxwqYkHOn9eBqP6bFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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