Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '116ae0463035322e87cf8a949fa14bb21606ebe00b36d745cc759fc357a6c90d' 
  AND token = 'lU4AYSejL8rCnr0YrIPEprEjprnQlNdo+CITNB6LwnI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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