sql - Non Clustered Index on UniqueIdentifier columns -


we have simple sql query selecting 2 columns below 

select teamid,isvalid teams teamid='{{guid}}' , subid = {{guid}}.

we had issues performance of query there no index have added now... 

create nonclustered index [nonclusteredindex-20170725-191322] on [dbo].[tablename]     (         [subid ] asc,         [teamid] asc,         [date] asc     ) include ([isvalid]) (pad_index = off, statistics_norecompute = off, sort_in_tempdb = off, drop_existing = off, online = off, allow_row_locks = on, allow_page_locks = on) on [primary]     go

the problem takes few milliseconds execute query few seconds!!! times .

and because of constraints can't change type of guid column , exernal system.

is there way can still make sure performance good


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