Allow users to run ad-hoc queries with long timeouts

1. Customer is trying to run ad hoc queries on uncleaned data

2. Expected behavior: When running a query to explore the uncleaned data, allow the query to run up to 20 minutes

3. Actual behavior: The query is timing out at 3 minutes, so the user cannot build charts / dashboards

Other notes:
Setting timeout is doable in metabase, and based on the stack overflow it’s clear open-source superset users are doing this