Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4d129831f2e9049798ad39fefd22b5cff2c9fd9b17d6ceeedf22c14c64d352cd' 
  AND token = 'd24ngTe6fpGg9GU9bqkXU88gwN7XBUiFc/S59z8ESf4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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