SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80ac24ed8b9b5df326918715f6eb82cc071298beeb7cd82886707cdd7d940680' 
  AND token = 'qBBoijRaFh3qY+O2mhSV7/WHzOGe+wFuYzSawnXvTCc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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