Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e17dc7115efce49aa9f20f41fdcebe88325584aea51ef78570a8ccbed1d6978' 
  AND token = 'I8OTQZQFY6C5X/osd9Gu5xahQo9lHRzLlrSp3XGS2fE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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