Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ae1ca9e568417b2e25e207adf0a5329b42ff31d393711d14b7ec1d19f16322f' 
  AND token = 'Xn4MtDJhyhi6eVNT3nuxP8ByMj6fLUw4YaQfOAJV2WM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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