Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2d9b3cd860b63ebe9f3577740b93411cb8bd0776fbb83a415cdecc36c89a8ad7' 
  AND token = '9KSml60u4q0nh5bpYCe2cQDlOgnAY0XFk6ujDERfV/g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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