Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66640904f4f7fc4f2795f452d7cd80e32ec515a75143361003b6d16fb21ea8f7' 
  AND token = 'vRPknOmOCs+/5OL5FzuEAXOdC/rPbd4aNfLXLqlz390=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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