Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8de8ae2928285b60389a04b621027ee81337fb99abe97887526bbfda0c2bc83d' 
  AND token = 'pRMkY5iawvXS+BElBf7HpdM8M9KcZTCjjiwdZKQJjDE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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