Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3056c3f642804d0726771277b694faf5b0be0efdd7b23397012494e9fd095576' 
  AND token = '2Iqaf2yB0vJjaTiQqILDR9eO4nx1/r5oJt6ZDdsxeFc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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