Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60de0cb4a4b9f1b4a0a748edba6f6639d6b5e5a9878cb61a81b0685029c32342' 
  AND token = 'rb0lodBA7cVJ4h4FEyXdaNnGdA4bgVoArLZ4CydDFus=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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