Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '235816f1dcf82589976004318d372ae54b439977ff402cf878b1447c7af75931' 
  AND token = 'Bnu7xVlSN4N7nO5qukevH339vk61PZYYaSdTdzFTCr0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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