Wash the cucumbers thoroughly, then slice them into 1/4-inch thick rounds. Sprinkle with kosher salt and toss to coat. Allow to drain in a colander over a bowl for at least 20 minutes.

In a mixing bowl, combine rice vinegar, minced garlic, soy sauce, toasted sesame oil, toasted sesame seeds, honey, and red pepper flakes. Whisk until smooth.

Add the drained cucumber slices to the dressing and toss gently until evenly coated.

Sprinkle sliced scallions and additional sesame seeds on top before serving. Serve immediately or refrigerate for up to an hour.