Unfortunately for your keys, you're still screwed until you get products like Tile. For the phone, however, if you are signed in with your Google account to your Android device, you can ask where your phone is.
If you have other devices, they may pop up. If you no longer use them, you can remove them here.
Apple has their own phone location service as well. Just make sure, just like Google, you have to be signed in with your apple account.
And dont worry, as long as no one has your password to login to your Google account, they cant use your computer to find where you are. You will be prompted to re-enter your login credentials. However, it bypasses 2FA - which makes sense because you cannot authenticate it anyway without the phone (duh).