Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c26ffbb7c7db1ffdeace9b4f75f9f7801cd13e8782cdd182293df510040876f' 
  AND token = 'SIt/eArdm4y2En5sA85f86z9wBxGoiuYXYl6MyPLWio=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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