Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c05862c7b72142ea490d087a1abec114e33a86c81459695917da9a6f6303895c' 
  AND token = 'pAxtnrZlYhXmfNl8yu07XfC9zHFbNZtTBT8sDf8kZsU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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