Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '46db04e4177023da3fa8d474dfe0c3a9b26c04dc3f6224b765a03a8869f1bd65' 
  AND token = 'yfGH6dNBnolFf6jecRbT6hi4X3kha6g8VSwl8kIX5nY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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