Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c32afbbbbc079da140aab10cb2adda27e8b29d58aebbf4c538f1cc245a597381' 
  AND token = '21rbV2O3v6qipOGWFty29WxyMQWJGGCEUa8+t4I6FYs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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