Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3415a5eedd10e9ac4d96efd5d90814fcf9673781a89c41b0714f3a698ba31d20' 
  AND token = 'W/af8lVLyrhYarIAtf54xQm9oM32lmYhWR8KSJD2r/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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