Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5de53dabfa500b2822b8916070ad2187c23a0dc6907228875c8278ec45bb57f0' 
  AND token = '/+l3SP65Dkf+xapDh2p+FOblsg0skP8q/iwc/VoHleg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}