Working with OLAP mysql in Django?

Question

MySQL

Such a question - does anyone have experience with OLAP in django. Where can you read about it.
The essence of the problem is that there is a large read-only database.
It is necessary to make certain selections with data aggregation - let's say summing up a certain parameter from a selection of millions of records per year according to a certain criterion.
A typical query summarizing a selection from MySQL takes ten minutes, which is unacceptable. It is necessary to speed up the selection to fit in seconds - ten seconds ...
As I understand it, the task can be solved using OLAP, only how to approach it. And where can I read about this - about integrating this all into django.
Maybe there are other ways to solve this problem?