Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '767af2839d343e97783a87ec076648ecb9b599965d952844b622062431c2a17a' 
  AND token = 'BbwJTRSpl7G3bUnOMDfbCYpLtD/k5f/yQ/9Qs0qsSGI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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