Immediately unplug it get the battery out of it get to the auto parts store and get some mass flow air cleaner it costs $7 a can spray the crap out of that motherboard and out of all the electronic components and let it drain right out of the hole on the side. Have your hair dryer standing by. Finish up by air drying away all the residue.
When all the residue is gone start your computer up and see if your keyboard works. You may find that your keyboard works and you may find out that it does not work. If you find out that it doesn’t work take your keyboard out and order another one off of eBay they’re only $20 don’t let that keyboard set there in that laptop because the water will drain out from the inside of your keyboard into your computer and destroy it.
But if you follow my instructions it’ll only end up costing you a total of about $30. To save your laptop