Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '67d320aa329236deae7a110b3ff32c6715b2c987607b542260ae27e974c8022c' 
  AND token = 'NecUxJwr7LUMOdagR3TBKo0ZLGk5xOdl07xmXZbo3zM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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