Just remove the keys, put your entire keyboard in a bag or something, shake out all the coke, poke a small hole at the bottom - and then put them all in a small ziploc bag... you should remove the big particles with tweezers but the small particles like dust are gonna be very hard to take out so you should just sniff it anyways since it won't do more damage then the coke already will and won't add or subtract from the experience
Edit:
Read the other posts, realized you meant the Coka Cola drink - nvm...