Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '68cf037d20ad3df38013b64f0bbb577d2acfee72349cc05c477c04c10df2f11f' 
  AND token = 'IiWe5viVwJAIrVLSRC/Yo94/cR+WLWqi3kJUAF5tgmo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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