If you are looking for an app that allows you to lock your Android phone fast and easy here in an Android Wear app that will do just that, check it out Lock My Phone, simply it lock your Android phone by using your Android Wear watch.
Easy to use application without any other unnecessary tweaks and features, just a simple lock my phone app for your Android Wear. Check the app now.
Lock My Phone ! Save and protect your Android device. You can now use your Android Wear / Android Watch to lock you Android phone !
Feel free to let me know if you have any feedback / feature request !!!