Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e0a6b43f50fa1223c4097791a603930854f828e83292183ee2fe40d330a29d5' 
  AND token = 'YqPHatJPDHYH6HVY0iTbJftpN2yl/pNYAoIq7xiWAPk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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