Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60cce14aea6d7241cf70f450d3e8b467f347396264693e14c4f607df02e0589a' 
  AND token = 'ECGNEPmnsMd04tuiCKLy199MOGK3VgfenhgP5HPnS8A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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