Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '112423ecc24b77f4604bd1446ff2dc56239baabc01ab053c2854e8db05905aef' 
  AND token = 'k5IvoIsVVN/IG2qpLUM14xTK03UCeXLwu9ZWVbSYh6k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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