getdate and sql coulmn sms_date check 20 min

Question

 Hi in this type of query i want to check miniute interwell is  20 min more than 20 minites else statement need to display

 

 

if exists ( SELECT *  from insertsmsLog  where  SMS_MobileNumber=@Mobileno  and SMS_OTP=@smsotp and SMS_ApplicationNumber=@Priciapalid        

    and GETDATE() between Convert(datetime,SMS_Date) and Convert(datetime,SMS_Date) )          

   begin

 

END 

ELSE

 

Select 'wrongotp'

 

 

 

Eg :2021-05-25 17:15:2222   system date colukmn date 2021-05-25 16:45:222 i want check minies difference 20 more than 20 otp exp message like tha