Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f13b47869b7421004b3858cea3404e00eada3b00dee0bb4c5ea8ab9d84c5937b' 
  AND token = 'gB8HWA94KjxGBICmlI0wyRV9T7X+gA81ETviDUnMleU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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