In this case you are going to a query that doesn't have a covering index. It also appears you do not have a clustered index because you are reverting to a table scan.
But this isn't the full execution plan.
Please post that so we can get the full picture.
Here is an article on how to do that.
http://www.sqlservercentral.com/articles/SQLServerCentral/66909/
Jason...AKA CirqueDeSQLeil
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I have given a name to my pain...MCM SQL Server, MVP
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