Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0af19cfa865d5227ae428f4ba60146909237e6f5b7126663446863d738ab7cde' 
  AND token = 'BzfnRQd76qagrZHKz7rzXnRdiYfWugsFBDYPT5Y9O0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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