Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ec916c733b96d2b4c81b844bc40cf809f67b41ac7c99d2dd3fc544cbf892adfb' 
  AND token = 'CXZLt5NFhXBKv8PHMkM6+X5g9oReHkrsQp6SLKcLB2Y=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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