Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dfd0ddad1f735880debb8d416d98ecc9d8658658761909d0a7bbe9331cfb9548' 
  AND token = 'cFEUoluSmW0dtb65m1HaA8xemQkCToFFslvRQ3VSEL8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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