How to get past 5 minutes updated records

DECLARE @StartDate datetime
DECLARE @EndDate datetime

SET @StartDate = DateADD(mi, -5, Current_TimeStamp)
SET @EndDate = DateADD(mi, -0, Current_TimeStamp)
Select @StartDate,@EndDate

Select * from TableName With (NOLOCK)
Where LastModified between @StartDate  and @EndDate

OR

Select * from TableName With (NOLOCK)
Where LastModified >=@StartDate  and LastModified <=@EndDate