While there is no absolute rule for naming Indexes, there are a few guidelines that will make the Indexes usable by other people
tablename_fieldname_commonsuffix
Ships_shipClass_ix
Her we are going to take our Star Trek “Ships” table
and create an Index on the “shipClass” field
Here we use an “ix” suffix on all indexes
Random or unregulated index naming can result in the proliferation of redundant tables cluttering your database