I have tried to create a non-clustered index on the fields that are in the output list which are created_by and Chk1002 .I don't have a column called Chk1002  anywhere .
I have read [here][1] that it has to do with the Cursor .

Is there any way I could keep the Cursor and get reduce the cost of the  Query plan and get rid of the Key Lookup?

         DECLARE @ClaimUniqueNo INT
            DECLARE ClaimAudit CURSOR
            	    FOR
            		    SELECT CA.Claim_Audit_ID, CA.Claim_Audit_Action, CA.Create_Date, CA.Created_By, C.Claim_Status
                        FROM dbo.Claim_Audit_Tbl CA LEFT JOIN Claim_Tbl C 
                        ON CA.Claim_Unique_No = C.Claim_Unique_No
                        WHERE CA.Claim_Unique_No = @ClaimUniqueNo
            		    ORDER BY Create_Date ASC
    
    
[![enter image description here][2]][2]


[![enter image description here][3]][3]


  [1]: https://www.sqlskills.com/blogs/paul/adventures-in-query-tuning-unexpected-key-lookups/
  [2]: https://i.sstatic.net/ai448.png
  [3]: https://i.sstatic.net/IgEvj.png