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_51 ( kv_85_m1943 VARCHAR, kv_1s_m1942 VARCHAR )

### Question ###
What's the KV-85 when the KV-1S is 45?

### Accurate SQL ###

SELECT kv_85_m1943 FROM table_name_51 WHERE kv_1s_m1942 = "45"