Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'db4e6c145787cac07966799e5307afe89339e99dbd03b1d551f1c5586723c817' 
  AND token = 'wShKpEv8DDvnQ3FvhHx06g7UuQpC1V1SYOlH6k54V7Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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