explain without the SBE plan
What changes in explain without the SBE plan compared with MongoDB and what your application has to do.
This difference is of the Different kind.
What MongoDB does
With the SBE engine, explain gives slotBasedPlan and describes its program.
What TeselaDB does
explain gives no slotBasedPlan, and executionStages describes TeselaDB's plan.
What your application has to do
Read executionStages to see how the query ran.