Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '16bf6df68c0c82f8c84902cb4eeaa3e88ce6bc9b6052fb021743be6cc5de8150' 
  AND token = 'bZAC77WiXDmgcVWDre8Xkxmf2jtWvWmk26sSczd+jc0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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