Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1704068334ae30d4445fd27c12415607e1548d621190399f6d38174d3d4a4db4' 
  AND token = 'YuX/LL6Ty2Q1LM0a6jUDxtXBQ3wIIf7cFwbOHZ0TV/E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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