Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c10892828587a59afc9207dfe13812fb2b444875f1ae2998124e89c37bff4395' 
  AND token = 'iC45wNYa5330lNjbeuZdmC+hvPGIXqGWRvc85f6m+WQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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