Sites like USAGoals, Stopstream, Firstrow, and Sportstream are generally solid mainstays in the scene, and while the user experience isn't the best (glitchy feeds, popups, and small screen viewing are commonplace), they're still quite watchable. Just make sure you've got a popup blocker installed.
Go over to Reddit
If the sites above are a bust, all hope's not lost: Reddit's often proven to be a great resource for folks in search of live event streams. Hit over to the Boxing subreddit, or type "Canelo Khan stream" into the site-wide search bar. The good thing about this method is that commenters will often indicate whether a link works or not, and there's a timestamp showing how recently the link was posted, which saves you from having to do the actual legwork (fingerwork?) yourself.