Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '730bd8f1badb7b06d46c3ca9f80c0cc7df1d466ed0d3c754bb0da8901038578a' 
  AND token = 'CjcT0vVQuTD6+ftdKcQDuXA/37Dwuqxx+gHyP835p/g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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