Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8b9e7c797deee01b7eeda0096316e55b58763551c3e76ee22d7e0af1c040f4b2' 
  AND token = 'WoO+YZ81gT/NcAYXn0kaZwRpWs68H5fek5Wy3RCtFJo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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