Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4595208878f2e915351787eefe6deb3117bac43e8fbdf37c4b594b23bda6479e' 
  AND token = 'aeWlgSuB8tVWHLeUCgQ0bRpO6zAib3tZcBzlg8iPVx0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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