Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9d14bdbea43bf7f73d50bf79db77dcb102b0d549d696114e0688a6e47e7ea310' 
  AND token = '056TDyxYVK3gY1MGt/l62afLf/jlu6yFm0f+lXGw/qg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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