MySQL why EXPLAIN result is confusing

Below is my Query:

select  *
    from (
        SELECT  *
            from  Player
            where  Country_Name in (1,2)
         ) as A
    inner join  Country C  ON A.Country_Name=C.Country_Id;

When i execute that Query i got 301 Rows but when i use EXPLAIN
the output shows Rows 42 and 2.

Below is EXPLAIN Output:

+----+-------------+--------+------------+-------+---------------+--------------+---------+-----------------------+------+----------+-------------+
| id | select_type | table  | partitions | type  | possible_keys | key          | key_len | ref                   | rows | filtered | Extra       |
+----+-------------+--------+------------+-------+---------------+--------------+---------+-----------------------+------+----------+-------------+
|  1 | SIMPLE      | C      | NULL       | range | PRIMARY       | PRIMARY      | 4       | NULL                  |    2 |   100.00 | Using where |
|  1 | SIMPLE      | Player | NULL       | ref   | Country_Name  | Country_Name | 4       | database.C.Country_Id |   42 |   100.00 | NULL        |
+----+-------------+--------+------------+-------+---------------+--------------+---------+-----------------------+------+----------+-------------+

Why there is negative difference between Output Rows and Explain
Rows? Is not they will be same or more?