The following code all returns False.
import jsonpath
data = {'layers': {'urlencoded-form.key': ["1234"]}}
assert jsonpath.jsonpath(data, '$..urlencoded-form.key') == False
assert jsonpath.jsonpath(data, '$..[urlencoded-form.key]') == False
assert jsonpath.jsonpath(data, '$..["urlencoded-form.key"]') == False
assert jsonpath.jsonpath(data, '$.."urlencoded-form.key"') == False