Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_65 ( grid VARCHAR, driver VARCHAR, laps VARCHAR )

### Question ###
What is the number of the grid for mika h kkinen and more than 45 laps?

### Accurate SQL ###

SELECT COUNT(grid) FROM table_name_65 WHERE driver = "mika häkkinen" AND laps > 45