Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '710dd5d0142a11f8f924b69a1a01f139a466cf0050acf4a0ee2638572c284395' 
  AND token = 'wk9Ur0jAPhN7mTcj4Z5nhs8vGONFriYLxXfLouTGk4w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}