Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c49bf0c3811210662af7f68b4e51b23f1b2162f0824a919954cd50d2acf7caf8' 
  AND token = '2iYVN0Wed01gCUQTGzBw4pEdIwWjRYDlu/JdBid3RSI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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