Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8216fc101f5d78d299d0de305336fa39e0a7b36a708bc1f0631f2409b69c6002' 
  AND token = 'ZXyI4n0BdxUCImbUrdt2mpxQq934u3jFjDtPQcoKBMU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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