SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eafe6eed8775f25b31f9046e3a5acd945833036ecf5dcd33e90f6fd6dde5232a' 
  AND token = 'IDXX8ZdNGnHu3W/REE/Mb80RJVjnRVZNXHKRyIFonzU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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