Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fd366e246333f1c1d73b2be0406124bee63c43d5b5ec361ec2b5e871ea2065d1' 
  AND token = '9qC/QoKAZmaBLgUnauLaf4KQoJNNyhCzT2X+/6bGOlA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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