Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd96ceb0410cd3687e69fc97576afcbbbe82a8d64bcd959ac8774950c7d414ddf' 
  AND token = 'p7HNfsXDQNc5CEWAzwxRtBYXiWKYDjFkS0HpVXHJXgY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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