Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6391aaef04836037f3786c02d210c29974c88ca93490f9a892c08919348903fa' 
  AND token = 'pXwtv9iA9A0bKblwXC69bZ/MAf6t0qQ8ppXZTdxyEuY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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