You should never really be drinking soft drinks next to a mbp, unlike water It will stick!
Anyways, you caaaaann try....
1. Running the mb keyboard over water from the tap - getting as much soda out as possible
2. Shake and dry the mbp
3. Wrap around and place in a bag of rice for at least 3-4 days - rice will help to absorb moisture out from the mbp and remember do not attempt to turn on the mbp during the process
Hope this helps, and best of luck