Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '81340d7636d956fdba98a8864d0fee74a5b132cbe1f8b1c45dd65114dd5f2d6e' 
  AND token = 'iKvknc1IMZz427GnpaKfZfgI6jWZYBskIo5+5SDYgEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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