Keyboards are so inexpensive I would not waste much time on this - especially if the ginger beer got inside. You can certainly try to clean it as in the video - no harm in trying. Some have had success washing keyboards in a dishwasher, then letting the keyboard dry for several days. Much depends on the key mechanism uses. Some have levers and springs, some are membrane buttons.
Consider yourself lucky you did not spill that on a notebook keyboard.