Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '723e7ef94772126f87224fdcd0fd324b106fb844d70555eb0dbc3f3fc1f2ffa3' 
  AND token = 'wa0+sxkGUzxDoFtyk9m6QlCop9Jh3T4+09Db/bxqTjU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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