Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '78cb9701341397dbf011502a336e0cf8892966cbc65fe062cf7ab7ab2ee776f8' 
  AND token = 'kLKZVyEYw33h0EbX6S/CuvRF/1OpSwoMw2S0cOE6xKU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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