Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '087ccb8a5b40f6fb76b7e8766bc1c7eb1d97d35efdbda7b728b480d0cb8d67d8' 
  AND token = 'r4C3EieQx/yTNs/zCersbGOqfITZhyubYRn5N7RE1tM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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