Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4c8adacd32c64de2fd1a523228ce0db1832f64e3e87b450f5706b7f44d95fa36' 
  AND token = '59D6bfaBKLq+0HAeA6c6wkdrqHjqm172VOxMRqfarS8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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