Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e4a9023f651e8baaf1ec9e3cb216ef59ed9c43edd732f899edcbe9f58f735b1c' 
  AND token = 'LNJMJlpPYViU7bCTbiYJfPQbqzclmudXOMEc2Hv3wc4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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