Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fc5d6ded4ddcc98526ac190a2d93e7c05ae57bd5686e8db48f3c94b814308aef' 
  AND token = '0mS22d/VSkPicqa1pKcghWIT+zDKmNB6lFFSiMHGHe8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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