Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '99e95b49655a241ec0d909496655da96329aade4df09717956a07c661023c079' 
  AND token = 'jw8MnCbG70nfIuEqCMMnW/tIvKTqUoWd+B4m0xqDhvA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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