import time


def convert_epoch_to_mysql_timestamp(epoch_timestamp):
    """
    Converts a given epoch timestamp in seconds to the MySQL datetime format.

    :param epoch_timestamp: The timestamp as seconds since epoch time
    :return: The MySQL timestamp string in the format 'Y-m-d HH:MM:SS'
    :rtype: str
    """
    try:
        epoch = time.strftime('%Y-%m-%d %H:%M:%S', time.gmtime(epoch_timestamp))
        return epoch
    except Exception as e:
        print(e)
        return None