SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '086da21435b880e196e3f1cbf91ff45bd74a8973220fc8847fb03ce02f13d145' 
  AND token = 'Fr9h7xPV9goUozwYYlCC+YlxPfIgx/D/ktg/E8tJe2w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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