Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '25e6043a546c96c7f290b732ff7a77f53dbb003d92e09ebb90ccb0761c7afe89' 
  AND token = '4eM+mVdRvfKaAxwO8S8AUmnd/WuvWw2Sp8JmcM8qT/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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