Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62507d3180838ca50fb01dd97f8ab8124ba81720e6cc956dfe7a73b2bc6f2077' 
  AND token = 'QtCx03kmHv0aT+grNpJ6Ij7CZaL8fZ+yEL0CQJw+h6Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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