Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '88e66e328f8acdadcf9f74f36a5f17648724e398545937f6880601e3b44ad6aa' 
  AND token = 'QwNOCQ0Iabyt/DA9XdlrXzwnnZifaWpkIRQfecOcu1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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