Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eb9ad5690f973d32b049a48de51863b8ea163a197122fef1b09023229294975b' 
  AND token = 'Lw2JKcIND1AWU/5yeFPFYMfSxuRMNc+AXap+SrTb3Ao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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