You can query your MongoDB Atlas backups with ease by following these steps: first, select a snapshot from your archive, then create a virtual cluster with the selected snapshot and connect to it using an X.509 client certificate for authentication through a secure tunnel binary provided by MongoDB Atlas or downloaded manually. Once connected, you can access your backup data using the mongo shell, allowing you to query data across different points in time and inspect subsets of historical data without restoring your entire database. The connection to your snapshot will be over TLS/SSL and will last for 48 hours before closing on its own.