SNS Publish Timeout when using Lambda

I am trying to send a email using SNS after connecting and executing a mysql query. My code works until I add the sns publish to my script. When this is done the Lambda function times out. I have tried increasing timeout, verified that the execution role has sns:publish assigned and sent a email from the SNS Console successfully.

Here is my code snippet for the push to SNS.

import sys
import logging
import pymysql
import json
import os
import boto3
import calendar
import time

username = 'removed'
password = 'removed'
rds_proxy_host = 'removed'
db_name = 'classicmodels'
logger = logging.getLogger()
logger.setLevel(logging.DEBUG)



try:
    conn = pymysql.connect(host=rds_proxy_host, user=username, passwd=password, db=db_name, connect_timeout=5)
except pymysql.MySQLError as e:
    logger.error("ERROR: Unexpected error: Could not connect to MySQL instance.")
    logger.error(e)
    sys.exit(1)
logger.info("SUCCESS: Connection to RDS for MySQL instance succeeded")

def lambda_handler(event, context):
    
    snsclient = boto3.client('sns')
    snsarn = ('removed')
    
    snsclient.publish(TopicArn=snsarn,Message='s3TriggeredRefresh Demo has successfully executed')
    print("Message published")
    return {"statusCode": 200,"body": "Function Completed Successfully!!"}