Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '92b215d92e51aa60d1bf50d6ebad6ca9f30ba2288bb4cd2e83734f6d586c1b67' 
  AND token = 'uALa+QIQcXM0U1CZdS3PR4cjvSyZIszf3rDU/9ioFl4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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