Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9bcfbf2e19b10aea85b5a5c0ee55aa27128aba2ef698fd1bdf416226f85914b9' 
  AND token = '2Lryt+MQNplgGeIVuv5YyHHJW96yFWsgAsNVzu+v2zI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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