Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a1d3d549043300bb9d867d53b06a94266f957132344609ab5bda69bd1009d99c' 
  AND token = '0+7nBuKSVg2RdExMkkc3I6F5fFIrHoXGhKt2PEaOr8k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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