Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecfb013c306b6a98971a642650b48113e85423b078d9d5f6f5610dd5559eac1d' 
  AND token = 'ERnRxbPdcqyf6+45QkKtaaC+6jTvlfBLb4R5Gtq/mGU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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