Any Android device on version 5.0 (Lollipop) or higher, that has near field communication or 'NFC' technology, is compatible with Google Pay.
By choosing 'Settings' then 'Connections' on your Android device, you can check if you have an 'NFC and contactless payments' option. If you do, here is where you can choose to turn the NFC on or off.
Here's the list of Google Play supported devices.