Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2bfe056ad1c950e1c96202b061e7dbea7af551074bbb579db6008e2f240dd3d3' 
  AND token = 'QhQSo5xifmqKVK7P9qkNBcFdIgHiPnZTOnjHfR89Efw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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