Determining whether a $lookup query can be pushed to SBE requires information about the foreign collection's indexes, which is known as secondary collection info. Currently, the queryPlannerParams construction pre-computes index information for the main collection even if no $lookup is present, a decision that is inefficient because the information is either entirely unused when a $lookup is absent, or irrelevant to the push-down decision when a $lookup is present, as that decision relies solely on the foreign collection's indexes. Removing this redundant pre-computation of the main collection's index information is necessary to improve overall performance.