Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8daa2fc94926d4b6134d50bd80985fa4c2139efc327885db19ffd5241939ecda' 
  AND token = '/da6TG2d/fahUnJyaFCHkGVh7RKDdNW2Y/M+CK7+9Ys=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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