Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7371fa116c08866c19bfc083682aaf15ff8783a7f5c9408bbcef08bc595cf0f4' 
  AND token = 'c++eEh/HxtfJ0VLv5XDA0au7oXKa5eh9ozRkUlk0YfU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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