Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '421026c31b39d956506b0240d0a29a53f7d2811ead1854df570c83f078d69b29' 
  AND token = 'eyNH9p0fc8FUyQEaVfFuP8Ad/7Mnw+rUDk+zkrqYRTo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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