Most sites will be unaffected by this change, but those with a large number of rows in `wp_options`, only a small number of which have `autoload` set, will see a significant performance improvement.
Sites with a large number of rows in `wp_options`, with many of them having `autoload` set will unfortunately see a performance penalty on top of the already very slow queries they're running, but this should be the minority of cases.
Props DanBUK.
Fixes#24044.
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