Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2380f7d68fe620cafdb1845c005707ea9e0bff342cad9f24f6ce20f4ebf0d457' 
  AND token = 'mTkz8XM+e6axpkiVqwVQ1AgPM5NXpzJ0oMkw+g4KE/8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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