Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9725d67d90b3c78afaa01fadaa75f26b83bc4386d45eb09e67447f4e402b081f' 
  AND token = 'TecGldro3BtqJfvkA4ofij8J0K0GCPi+eO4B3L2mHU8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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