Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '835c12456cd518f9a544da1a0e3887946e956aca94ac572fb411a8362ba7f0a2' 
  AND token = 'lWT9YkOOYot1mpXYZc00OdjloMFb5arZ7RyTZGTIVrY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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