Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '774774489607b385bd04cbec3c0742a2b9bb9b15e7f3c07d64bbabce249fe667' 
  AND token = 'KwxXWRSQliNpu8zs2MQ/25TwkQdNZSywt4d4Z2JILPs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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