Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35191855ae65b671647d82ad68e47c8a99a9d875577c22e33b31c05436148614' 
  AND token = 'A0F13T4JmFmPSyy8UZATNfhnm+25Z7XLU8wsJt9vWzU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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