Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecb3e8f6c10f50be0acccf25468217cc69fff38551dc0e89e1a2a5b24b6d204e' 
  AND token = 'Nfu7tbni9027QSXFKdnpWpI8ICTVTaYXOltaaX0N/J4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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