Adding a little technical insight:
MKJOGO is caught by Riot's anti-cheat since patch 3.13, some regions do ban their users for using it though some don't.
I'd personally do a little research before using it in mains, I'm aware it's not bannable in BR but heard about previous banwaves in NA/EUW. Check to see if people were previously banned for using the program in your region before.
Still, once Riot's AC is able to identify the program and MK devs seem not to care so much about it, know that you're being caught regardless of the region you're playing at. Even where it's not a bannable offense, Riot knows you're using it. Whether you'll be punished for it or not is another different story, since different regions use different guidelines on punishing their users.