sqlalchemy.pool + psycopg2 timeout issue

I have a web application timeout issue, and I'm suspecting the error is in the database. The query is running too long.

How do I increase the allowed-running-time for my setup?

I am using a db pool by using sqlalchemy and psycopg2. My database is a Postgres database.

  import psycopg2
  import sqlalchemy.pool as pool

  def generate_conn_string(db_name):
        db_name = db_name.upper()
        conn_string = "host='{}' port='{}' dbname='{}' user='{}' password='{}' ".format(
            os.environ.get('DB_HOST_' + db_name),
            os.environ.get('DB_PORT_' + db_name),
            os.environ.get('DB_NAME_' + db_name),
            os.environ.get('DB_USER_' + db_name),
            os.environ.get('DB_PASSWORD_' + db_name))
        return conn_string

   def get_conn_():
        db_name = "mydb"
        conn_string = Pooling.generate_conn_string(db_name)
        conn = psycopg2.connect(conn_string)
        return conn

   connection_pool = pool.QueuePool(get_conn, max_overflow=30, pool_size=5)

from sqlalchemy.pool + psycopg2 timeout issue