MySQL: low cardinality/selectivity columns = how to index?

Question

I need to add indexes to my table (columns) and stumbled across this post:

How many database indexes is too many?

Quote: “Having said that, you can clearly

Answer 1

You will hardly need all 150 mln records at once, so I guess "status" will always be used in conjunction with other columns. Perhaps it'd make more sense to use a compound index like (status, fullname)