Iterate over a CSV and replace with sed with escaping values

gistfile1.txt

#!/bin/bash

file_with_replaces="some-csv-file"
folder_to_look_into="folder/to/look/into"
filename_extension="*.txt"

while IFS=" | " read -r search_for replace_to
do
    # From: https://stackoverflow.com/a/2705678
    escaped_search_for=$(printf '%s\n' "$search_for" | sed -e 's/[\/&]/\\&/g')
    escaped_replace_to=$(printf '%s\n' "$replace_to" | sed -e 's/[\/&]/\\&/g')

    find "$folder_to_look_into" -type f -name "$filename_extension" -exec sed -i -e "s#$escaped_search_for#$escaped_replace_to#g" "{}" \;
done < $file_with_replaces