Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93fa418679317f63d5b2cba87850a776713aa341d2ac1e1e8966edec7e2706a4' 
  AND token = 'a8s1ioYKgJiDckXSHc0k82ZZMrbYnGY6h3XG2wleqt0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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