How to find out when db was last accessed?

Just uploaded a database backup and everything is fine again. How do I know which changes were made last though?

I could do something along the lines of

SELECT update_time
WHERE table_schema = 'dbName'
AND table_name = 'someTableName'

but neither do I know the database name in the hosted version nor can I guess which table would have the latest record

Note to self: It is at the end of the backup sql file:

-- Dump completed on 2022-10-19  8:00:27