Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e70c3f8d7ce2269fdf59d77ec956695c441b126944cece1427caf98dac44f7ca' 
  AND token = 'vWbYOPSFjx3W57qsiodT/8O4uC5nPLxcIWfGDuD9314=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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