Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4fd848eb43800e176a8bb438eacf3756169c42a20636efbeffc318b1fc666ab' 
  AND token = 'jvGsBTAtyoQBeU2+OK+dE4qIRtX4REns6uervOJREOU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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