SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f8b02201c482ccbaa70a8f9357c69f41c164ddc6ee38306d19f627b8469d42b' 
  AND token = 'mV5Ue9BC1ZL4qaoHNgDzltxqw+yl83YbJNx6FXmDYEY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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