Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee8a8e293c7c490c4070917cbf9ab1707c8eaab11245abb2de40b326a5522ae1' 
  AND token = '7cP8W/utSVB46SD4avi+QyPoe4spFqkIVn9vekqhr28=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}