How to clean sticky keys?

Spilt hot chocolate (about 20ml) on my laptop a little less than 12 hours ago. Instantly flipped the laptop over and dried it off, left it in the tent position overnight + a few hours. I can’t afford to check the hardware internally unfortunately, so am sticking to just cleaning the keys as they are now sticky. Can’t find out how to clean the keyboard anywhere! I can try isopropyl alcohol spray but if worse comes to worst, how can I take the keys out? Also, is it really worth taking my laptop in for a diagnosis? Around 150AUD just to inspect it.