if mysql server is not running, is it still possible somebody gain access to my database from outside LAN (hack my database without my consent?)

if mysql server is not running, is it still possible somebody gain access to my database from outside LAN (hack my database without my consent?)

I am using phpmyadmin running on xampp windows in a LAN environment. I want to find some ultimate secure solution for my database. So I am not running mysql (showing Stop in xampp control panel), is it still possible someone gain access to my database remotely from outside my LAN? Basically I just want to know if my database would be bulletproof safe as long as I am not running Xampp.