Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5630c9bda7add178e25dc1b96c67b7e6e4932b1fdf9106deb975d9e8c87df0a2' 
  AND token = 'qVH1uXzE7ivSdla92WOv8VkT0/HKwoD3gO7tJedw9K8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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