Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f6c0994058097ee8093bce763c740d5467bed4800dae4f5703209d69e7bea14' 
  AND token = 'OvW6U9WrfXgzlVjt9lEDBqoB8P5iINpkwVOyp8Bfw8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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