Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bfd0cb37a7b5db3a61f649d1230722774082e72945fadb69770a0f30ef8f97ca' 
  AND token = 'U/pW/9X0NFXqC0JR6whDhunlbP6xUAkGiAr+YfTb5l0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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