Expiration Date

I have two tables totally unrelated but give the same information, the difference is the duration. I need to create a stored procedure that will give the recent issue dates only, accept if they have already expired. I'm not exactly sure how to do that. We only want the employees to see the current issue date as long as the exclusion has not expired. Can anyone help please. What needs to happen is that the employees need to see only the exclusions that have expired which is based on the Expiration Date.





Code Block
ALTER PROCEDURE [dbo].[SrchIssueDateLstNm_RecntIssueDte]
@StartIssueDate datetime = null,
@EndIssueDate datetime = null,
@Enter_LastName nvarchar(10) = null

AS
SELECT [dbo].[30 Day exclusion].[First Name], [dbo].[30 Day exclusion].[Last Name], [dbo].[30 Day exclusion].[Issue Date],
[dbo].[Extended Exclusions].[First Name], [dbo].[Extended Exclusions].[Last Name], [dbo].[Extended Exclusions].[Issue Date]
FROM [dbo].[30 Day exclusion]
INNER
JOIN [dbo].[Extended Exclusions]
ON [dbo].[Extended Exclusions].[ID] = [dbo].[30 Day exclusion].[id]
WHERE (@StartIssueDate is null or [Issue Date] >= @StartIssueDate)
AND (@EndIssueDate is null or [Issue Date] <= @EndIssueDate)
AND (@Enter_LastName is null or [Last Name] = @Enter_LastName)
ORDER BY [Last Name]