Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1c5385255334970744fb914dc452b63d4415961e82f15acae6411666d5963dd' 
  AND token = 'UxS1UrpF4GO5NBap+6coyO8REVTnpX+Z6qLOEw0+SxE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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