Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53da16ae4bc5762462fca8f444fef0ca4a6741cd53d5166d4e183c4dfe1adbbd' 
  AND token = 'aPM7KarNmrcBXqFibVYjwLl8PvkPEr80wqLFL3y2qmY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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