Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a958516ebb34a2f755ca6d028a111b4150ce8522de56fe6c61435dbae1949c69' 
  AND token = 'orre3Li+DYU7+nfVTfrRUmKGqgjd4l/d7UnuXGVApeQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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