Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a472f88da26b81610545a09be54ace5dcb236c2a10c5102aa8acf56e9e8241d9' 
  AND token = 'enVpSsJv9Vau7hZB7Ni01Y9ONvvJdbVjvvwjk0Z1m2M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00069

JSON explain

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