Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29738a7daee3eccb81fb6010586c4c92310412dac9c0e8e151ba4926154b8946' 
  AND token = 'L3NlI82Tni9FddVOMvERUt34y63Dzu8WkDkX/gyTMLc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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