Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2c63d47e5bd891b9948eef65d389b5729c66a69faf0d7595d4e96c08b99ea6a8' 
  AND token = 'lXMiqb803m7+0sKtdIllm837em1j9SNd4JKZAq4vKDw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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