Can you replace just the keyboard from a laptop?

I recently laughed so hard that I spit water into my keyboard. All of the keys work except the spacebar and the “x”. Of course, I ripped those two key covers off to clean and now they won’t fit back on.
This is my work computer, by the way.
Can I take it to Best Buy or a similar place and have just the keyboard replaced? Yes, I’ve already tried all the tricks to dry it out and get it to work.