Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9495bd78ed4783006c03d71dc0a16787b53bc05191b8cfb9c1825a0c89a66066' 
  AND token = '82TxQubxVh6dydFrTzeTx+Mad0JqzQsQnaDTt5JP19M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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