How to do a whole word search in Chrome's Find dialog
I found an extension called FindR that will do the trick. The extension (no affiliation) is meant to find AND replace, but it works perfectly as a Find-only tool as well. There are separate checkboxes to Match Case, and match Whole Words Only.
If you wanted to get fancier, you could use a RegEx extension such as Chrome Regex Search. That one even allows you to remap the Ctrl-F hotkey.