Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '28067a8a4a6f5fd74e77a65bb75b696ca9571c1d804bac4a4573206f6fea5861' 
  AND token = 'KTlCKPkmopRpniN6+u9BIxQwF4iunNzSzjYhbd8Yepk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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