Due to the large number of extensions, the query that
checks if an extension exists needs an index that
covers all of the columns used for joining/clauses.

Change-Id: I73bd78a7d923a1e49594374b0dd8fee270fa30a3
Releases: 8.7, master
Resolves: #81097
Reviewed-on: https://review.typo3.org/52670


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christer V <cvi@systime.dk>
Reviewed-by: Andreas Fernandez <typo3@scripting-base.de>
Tested-by: Andreas Fernandez <typo3@scripting-base.de>
Reviewed-by: Michael Oehlhof <typo3@oehlhof.de>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Jan Helke <typo3@helke.de>
Tested-by: Jan Helke <typo3@helke.de>