Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '591b9b6f6652a466b57519b3952b33633298b2b992f925048dfaf7b7c03a03d4' 
  AND token = 'WeEq4DzmyC5P0fACM34+n+hx+n57iKH7q/iYxWDa9io=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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