title: Is there a way to check if a key=value exists in a DynamoDB table?
body: <p>I want to check if a specific key has a specific value in a dynamodb table with/without retrieving the entire item. Is there a way to do this in Python using boto3?</p>
  <p>Note: I am looking to match a sort key with its value and check if that specific key value pair exists in the table,</p>