Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a95e49c948ae425df19a55b0c9330b8f7b9c1711b581804147fd1e978f77944' 
  AND token = '458Lq6nBBS+/I0nGMRlI95SUMIbRam6wP2AxcckYF+E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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