Grafana - not updating the latest data on Graph

[bycadirao]

Dear All,
Presently i am using

1. MySQLWork bench 8.0
2. Grafana grafana-enterprise-10.2.2.windows-amd64 versions

Issue facing:

1. Presently i am using Time Serices Graph. In this i need to extract latest 5 Hours data from MySql Database. Data base table details as follows.
   
   

Table has latest data (data logging is happening once in 5 seconds )
MySQL query output is:
select tbl_Pressure, LastUpdatedOn,Slno FROM db_anodizingline.tbl_tank1 where LastUpdatedOn<= NOW()- INTERVAL 1 hour order by slno desc;
Output is:

At the same time following query has been used in Grafana:
select tbl_Pressure, LastUpdatedOn,Slno FROM db_anodizingline.tbl_tank1 where LastUpdatedOn <= NOW()- INTERVAL 1 hour order by slno desc;

here the issue is:

1. Grafana is not updating (Graph is not displaying the latest data as per the query and result in MySQL)
   

Please Suggest.

2. Time appearing in the Graph axis is not matching with the current date and time.