Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd37c256755ca6227cba2e061b4aa53c5ec7db36706c84f0b6279a2d9b4227960' 
  AND token = '4626HgorllIHX8P+OqA+J8daGuuGfNsm8ncKqxUX6A8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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