Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2dfe56b20036b66166bf0a787c77309cb2e0ce9dab3b1a12517c89db00928d8b' 
  AND token = 'm0eTsqoEEAQCmDs0JsJz4EBA4ub5fZZlUOW+RGQfS20=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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